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Go ahead, circle the parking lot till your favorite song is over. Polk Audio's DXi Series speakers will make you want to hit "repeat" so you can hear it all over again. Polk uses a high-tech approach and ideal materials to give your tunes an exciting new edge.

Go ahead, circle the parking lot till your favorite song is over. Polk Audio's DXi Series speakers will make you want to hit "repeat" so you can hear it all over again. Polk uses a high-tech approach and ideal materials to give your tunes an exciting new edge.

Precision woofers showcase your music
The DXi 5250 component speaker system features 5-1/4" woofers with polymer/mica composite cones that are lightweight and stiff, so they can create a big sound with minimal distortion. Polk analyzes their drivers in motion to ensure that cone movement is even and precise. Polk also uses laser imaging to craft woofer cones that are perfectly balanced to resist distortion-causing resonances.

Silk/polymer dome tweeters broadcast sweet sound
Rest assured, you'll hear every detail of your most enthralling musical moments. Each 1" silk/polymer dome tweeter brings out the high-frequency highlights in your music, and a proprietary magnetic liquid cools each tweeter so you'll get clear sound and excellent long-term performance. You can set your own stage — surface- or flush-mount the tweeters with the included swivel-mount cups, and aim the tweeters towards your ears so you can really enjoy the show.

External crossovers for stand-out detail
Polk includes high-quality crossover networks that create a smooth transition between woofer and tweeter, so you'll hear accurate, balanced performance from this system. You can adjust the tweeter level for the most natural sound in your vehicle. From an intensely quiet acoustic pluck to the most exhilarating electric solo, it'll be a very entertaining ride.

Product Highlights:

component speaker system includes two 5-1/4" woofers, 2 tweeters, and 2 crossovers

Very Good Speakers

I replaced the head unit in my 2008 Nissan Frontier with a new JVC unit from Crutchfield. It was too much for the stock speakers, which had all the frequency response of a garbage can, so I ordered these Polk component speakers. HUGE improvement! These Polk speakers sound infinitely better, with sharp, clear highs and a lot of kick to the lower end. A few notes: - Installation in my Frontier took a lot of thought and some trial-and-error. I'd thought that the new tweeters would be an easy connection to existing brackets and wiring, but that was not the case. Eventually, I just mounted the tweeters on top of the existing plastic speaker grill on top of the dash. - The crossovers wound up being mounted high on the kickpanels in front of the front doors and so far nobody's managed to kick them. - The tweeters are almost too sharp. They can be adjusted on the crossover boxes and I put them at their lowest setting, which helps. - Low-end response has a surprising amount of kick to it. The speakers can handle more than my head unit (no separate amp) can give it. - I generally listen at low to moderate volumes and am perfectly happy with the sound. When I crank it up, it seems like the highs and lows overpower the mid-range. Bass and treble come through clear, but vocals get buried. Maybe I need to spend some more time tweaking my equalizer settings.
Overall, I'm very happy with these Polk speakers.

Pros:Clear, sharp highs, surprisingly strong bass, can handle more than my head unit can throw at it.

Cons:Installation took a lot more time and effort than expected. Lows and highs overpower mid-range when the volume is cranked up.

4 of 4 found this helpful

Polk Audio DXi 5250

I'm really happy with these speakers. They are a great deal and sound fantastic. I'm pushing them with an amp that provides 60w per channel behind a JVC Aresenal head unit. The install in my e36 BMW went well. My only complaint to them is the wire connected to the tweeter is hard connected. There is a 5 or 6 foot lead on it, but when installing in the doors there's no easy way to disconnect them if you have to pull off the door panel.

Tricky Install, But Nice Speakers

Jake from Norwich, CT on 7/16/2012

I installed these in a 2005 Toyota Corolla Sport, and they took a while to install (the tweeters ended up being mounted with double sided tape and some electrical tape, as the supplied polk bracket was too large for the sail panel). Once I turned on the stereo, I could hear a huge difference. The sound sounded as if it were coming more from the dash, rather than the floor (it was clear these tweeters did much more than the stock ones). Overall, I'd say they are a good speaker for the money, and worth the install.

Polk Audio DXi 5250

I've just installed two sets of these in my 2008 Honda Ridgeline. The improvement in sound quality over the factory speakers is simply fantastic. Mid and Highs are excellent and the low band is nice and tight. Crutchfield installation instructions, adapters and harness were spot on. Great Job. :)

Pros:Fantastic improvement over the factory speakers.
Sound reproduction is excellent.

Cons:If you are looking for the "Deep Bass" reproduction you'll get some from these but they are limited by their size.

Excellent components.

I have an old Audi A6 station wagon in which I have been replacing the old stock Bose system piece-by-piece. It has been a fairly difficult process in that the stock speakers were irregular sizes, but I got these to fit the rear door openings. The woofers and tweeters fit perfectly in the stock locations, and the crossovers mounted well with some double-sided tape to the inside of the door panel.
Of course, since they're 5 1/4" speakers, they don't produce much below 80 Hz, but above that the sound quality (and quantity) is great. I'm only powering them with the deck, but they still sound good; I can only imagine what they'd sound like with a good amp.

Klippel Optimized Components: For a driver to reproduce
complex sounds accurately, the cone must move exactly the same distance and
manner in both directions. The Klippel distortion analyzer, a device that uses a
laser and sophisticated software to do large-scale analysis of drivers in
motion, lets Polk optimize the speaker's motor structure, voice coil alignment,
and suspension to yield the best possible performance.

Mounting: The supplied mounting cups allow you to surface or
flush mount the tweeters. The tweeters swivel in the flush-mount housings, allowing
you to adjust them for optimum imaging.

Tweeter Mounting Dimensions:

Surface Mount

Flush Mount

Mounting
Height

1.036"

0.404"

Depth

screw
depth

0.951"

Frame
Diameter

1.997"

2.291"

Cutout Diameter

N/A

1.943"

Crossovers

Design: The outboard Butterworth crossovers are 2-way with a
4 kHz crossover point; both the high-pass and low-pass output slopes are 12
dB/octave.

Tweeter Level Switch: You can adjust the output of the
tweeter to match a level appropriate to your vehicle or your system. On the end
of crossover (opposite the terminals) the switch can be set to -3 dB, 0 dB, or
+3 dB.

Protection Circuit: Each crossover has a built-in electronic
circuit that protects the tweeter from accidental overdriving.

Crossover Connections: The crossover inputs and outputs are
screw terminals. The terminals will accommodate the included wire or spade
connectors up to 0.35" wide.

Mounting: There are two mounting holes in the base of each
crossover; the cover must be removed to install the mounting screws.

Crossover Dimensions:

Width: 3.085"

Height: 1.070"

Depth: 5.040"

Marine Rated

Marine Certified: Every DXi Series loudspeaker is designed
not only to withstand the demands of a car's sun-baked climate, but corrosive
marine environments too. That means subjecting them to ASTM (American Society
for Testing and materials) scrutiny to ensure they are suitable for the marine
environment. Each speaker endures a series of grueling accelerated weathering
tests to see if it can stand up to a harsh marine environment; including
hundreds of hours of salt fog, intense ultra violet light, and temperatures
ranging from minus 40° C (-40° F) to +85° C (+185° F):

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.